The ignition coils on your BMW were designed to have a long service life with and extremely high output and efficient design. The coil on plug design offers extremely high energy and no need for a distributor. Whether you are replacing or upgrading your coils, Turner Motorsport has Genuine BMW and high performance aftermarket options to suit your needs.
Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil, the spark plug is not burning the air/fuel mixture properly, and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code, but not always a check engine light. A misfire code may be related to an ignition coil, but could be from other things as well. Sometimes, a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.
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